QUESTION 1 The cross section of an I beam has top and bottom flanges having a width of 400mm and a thickness SS of 200mm. The web is 150 mm wide. The beam is 15m long and simply supported. It carries a uniformly distributed imposed load of 12 kN/m. If the initial prestress is 1100 kN and the eccentricity is 325 mm below the beam centroid, find the stresses at midspan a) under the self-weight of the beam only if the short-term losses is 20% b) under service load if the prestress is reduced to an additional 10%
QUESTION 1 The cross section of an I beam has top and bottom flanges having a width of 400mm and a thickness SS of 200mm. The web is 150 mm wide. The beam is 15m long and simply supported. It carries a uniformly distributed imposed load of 12 kN/m. If the initial prestress is 1100 kN and the eccentricity is 325 mm below the beam centroid, find the stresses at midspan a) under the self-weight of the beam only if the short-term losses is 20% b) under service load if the prestress is reduced to an additional 10%
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![QUESTION 1
The cross section of an I beam has top and bottom flanges having a width of 400mm and a thickness
of 200mm. The web is 150 mm wide. The beam is 15m long and simply supported. It carries a
uniformly distributed imposed load of 12 kN/m. If the initial prestress is 1100 kN and the
eccentricity is 325 mm below the beam centroid, find the stresses at midspan
a) under the self-weight of the beam only if the short-term losses is 20%
b) under service load if the prestress is reduced to an additional 10%](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F32382d02-fb54-4d44-b311-534b52ffe287%2Fb19013f2-665b-4c35-9d7d-804baac0aeb2%2Fqmitk2_processed.png&w=3840&q=75)
Transcribed Image Text:QUESTION 1
The cross section of an I beam has top and bottom flanges having a width of 400mm and a thickness
of 200mm. The web is 150 mm wide. The beam is 15m long and simply supported. It carries a
uniformly distributed imposed load of 12 kN/m. If the initial prestress is 1100 kN and the
eccentricity is 325 mm below the beam centroid, find the stresses at midspan
a) under the self-weight of the beam only if the short-term losses is 20%
b) under service load if the prestress is reduced to an additional 10%
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